Abstract
One of the possible methods to produce composite alloys with improved mechanical characteristics is the modification of metal melts using submicron- or nanosized particles. Different methods, like ultrasonic or vibration processing, have been used to introduce these particles into the metal melt. The introduction of particles into a metal melt is prevented by the poor wettability of the liquid metal. The present study explores the use of electrostatic charge for increasing the wettability of the particles and preventing their agglomeration. The wettability of electrostatically charged particles by the metal melt under the impact of ultrasound has been studied. The relationships between the impact time and the physical and chemical properties of the particles and the melt along with the characteristics of the acoustic radiation have been studied. It was experimentally demonstrated that the introduction of electrostatically charged particles into the metal melt reduces the porosity and the crystal grain size.
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The research was funded by a grant from the Russian Science Foundation (Project No. 17-13-01252).
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Sergey Vorozhtsov—deceased.
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Kudryashova, O., Vorozhtsov, S., Stepkina, M. et al. Introduction of Electrostatically Charged Particles into Metal Melts. JOM 69, 2524–2528 (2017). https://doi.org/10.1007/s11837-017-2567-4
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DOI: https://doi.org/10.1007/s11837-017-2567-4